South Tongass HWY over Front and Mill ST Viad
GoodKetchikan Gateway Borough, Alaska · Mile Point 2.1 · Structure no. 1081
- Built
- 1973
- 52 years old
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 357 ft
- 7 main spans
- Daily traffic
- 6,830
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
South Tongass HWY over Front and Mill ST Viad is a prestressed concrete tee beam carrying South Tongass HWY over Front and Mill ST Viad in Ketchikan Gateway Borough, Alaska. It was built in 1973, so it is 52 years old, older than the Alaska average of 35.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 6,830 vehicles a day, roughly 5% of them trucks, projected to reach 8,290 by 2039. The structure is 357 ft (108.8 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was South Tongass HWY over Front and Mill ST Viad built?
It was built in 1973, making it 52 years old in 2025.
What condition is South Tongass HWY over Front and Mill ST Viad in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does South Tongass HWY over Front and Mill ST Viad carry?
About 6,830 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is South Tongass HWY over Front and Mill ST Viad?
The structure is 357 ft (108.8 m) long with a longest span of 51 ft (15.5 m) and a deck 60 ft wide.
Who owns South Tongass HWY over Front and Mill ST Viad?
It is owned by the State Highway Agency.